Improvement in horse-shoes



i ,tiene o @anat-Whiting :am l oww RUDOLPH LAPoR'rA,

` orv NEW YORK-QN; Y.

Letters Patent No. 84,834. dwtedDecembcr'S," 1868.

mPRovmvmNT IN HoRsE-snons.

vThe4 Schedule referred to in these Letters Fatentand kmaking part theTo all l'whom it may concern Be it known that I, RUDOLPH LPonT, of thecity, county, and State of New York, have invented a new and usefulImprovement in Horse-Shoes; and I doA hereby declare that the followingis a full and exact description thereof, reference' being had to theeompanying drawings, and to the letters of reference marked thereon.

-The object of my invention is to provide .the ,shoe

- of a horse or other animal .with calks that are lindependentof theshoe, and so constructed and lapplied to the shoe, that the tendency isto expand the shoe' -provement as applied to the shoe, and the shoe onthe foot yof the animal;

Figure 2 is aplaniview of the under side of the shoe andimprovement; i l

Figure 3is a'n end sectional view of conical screwnut- Figure 4 is across or. transverse section of iig. 1; and i f Figure 5 shows thewrenchby which the screw-nut Vis turned.

In the drawings- A represents-a common shoe without calks, and attachedto the footof a horse, in the ordinary manner, by means of nails B.

C is a longitudinal screw-bar, which is grooved at its forward end toiton to or embrace the inner edge of the shoe within' the groove, asseen at Lin lig. 1.

Upon the rear end of this bar is cut a screw-thread, T, and upon whichconicai screw-nut E is made to operate; and upon the under side ofthelower part o' thc'bar C, and at its forward end, projects a calli, I.

H is the cross or transverse bar. 1n the centre of its length is aconical hole to admit the bar U and conical screw-nut E. v

Upon eithenend of this transverse bar is a calli, I, as seen in fig. 4.

Upon each end of bar H is a groove that embraces and slides upon theinner edge of shoe A.

The calks I and l' may be sharp, to prevent slipping on frozen groundand ice, or they maybe dat, without coming to a iig. '4; p

1i is a wrench to turn the' nnt E.

.The conical nut E is split at ,its larger end vto more 1 from this, asthis has no calks upon the point, or to a sharp edge, as shown at I, Y

than lhalf 'its length, and tempered'to a springtemper. The objectofthis is toprovideagainstfthe--nut slipping upon bar O when'thescrewl-,threadsare partially or wholly worn at the forward end of thenur,

which is fully,V done by screwing the conicaljnut into the conical holelin barH, and thus contracting" the forward or large end of n'utFlupontlie' bar', which will'eectnally lhold it firm in place.,

VToapply my improvement to the shoefissimple and,

easy, and it`1is done by turning the screw-nutnpon the, bar O. v Plt'rcebar H in position on the-shoe; then insert the screw-end o'f bar O, withthe'nutE, into' theA conical hole in fbar, H,"with' thenut tnrnedon thebar O farV enoughto ailowthe forward end'of-bar 0 to turn intoposition.- When the nnt' E Aisimrned, forcing bar C forward so that thegroovejwill-ein :brace the shoein the groove, and soforcing-f'bar C uponthe inner edge of the shoe, the igforced back upon the shoe, wherethe-twop-sides aneless distant apart,vwhich tendsat thesamejtimq t'ospread the shoe at the. heel, instead of contracting-the'wdth of theshoe at the heel, which is a greatl advantage, asl the tendency inshoeing, as commonly practised, is to contract insteadof expand the shoeat the heel, and such expansion has a tendency' 'to spread .the hooi`also, and keep the feet of the'animal in proper condition.

I am aware that a somewhat similar device in oonstruction has been used,such being shown in patent,

if not to expand, to prevent the contraction of the hee] v of the shoe.

I am also aware of patent, No; 47,242, dated April l l1, 1865, whichy isfor a false shoe, that fits within the inner diameter of the shoe, and ascrewis used to expand or widen the' shoe at the heel, and to preventthe foot from contracting.' My construction `is different devices thatare distinct from the shoe.

` v Having thus described myimprovement,

. A, whenconstructed and arranged to operate together substantially inthe manner and for the. purpose described.

lt. LAPORTA'. Witnesses:'

f S. SOLOMON, y,

F.. Scannen..

